GreenBuild: Green Wall Techology from Tournesal
by Lloyd Alter, Toronto 
on 11.26.08
We have shown a lot of green wall systems that require some pretty complicated plumbing and controls, with the plants barely hanging on to a layer of felt or mesh. Christopher Lyon of Tournesol Site Works has an interesting alternative, a prefabricated system out of Singapore that has enough depth to hold a serious amount of soil. It is a lightweight plastic version of Sharp and Diamond's modular wall system seen at the Vancouver Aquarium, where modular boxes can be pre-grown and just fastened to the wall on rails. If one dies back you just pull it out and replace it.
The system is so new that it is not even on the website yet, but watch for it at Tournesol Site Works.
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I feel that the "greenwall" is another impractical fad. It is certainly not service friendly and due to the fact that it is stationary, not in the best interest of the plants well-being. Plants that are in an interior environment need to be mobile. It reminds me of a modern version of potted hanging plants. Lets get back to the mind set of 17th and 18th century Europe when plants were kept
in containers in setting rooms, ballrooms, hallways and building lobbies. This approach is far classier. Tournesol is looking for a new product to market